package priv.lirenhe.javabase.charpter03_4_03;

public class Biology {
	
	private String move;
	
	public Biology() {
		this.move = "can move";
		System.out.println("this is Biology");
	}
	
	public String doMove(){
		this.move = "do" + this.move;
		System.out.println("Biology="+this.move);
		return this.move;
		
	}

}
